If you only want to mine a single coin and want to get paid in that coin, go with yiimp. If you want to try and ride the wave of multiple coins to increase your payout, zpool is the best I have found regardless of what is said here. I am happy with the daily payouts I get with zpool and I don't have to manage it. They at least match, but usually beat, estimated payouts for mining a single coin. When I multi coin mine on yiimp I had to create 10+ wallets on various exchanges, then wait for enough coins to amass to be able to sell them. Then transferring the BTC back incurred another cost. All of this is handled in bulk by zpool which reduces cost and time. To duplicate the number of coins available to mine and manage the exchanging of those coins to BTC, requires a significant amount of time without zpool, in order to get the same payout (in my experience).
But in the end, it's your choice what to do. As my operation gets larger and I dedicate additional time to it, I may move to yiimp and hold coins longer to catch the rises in the market better. But currently I don't have the time, so zpool provides a very consistent income that I don't have to manage.
Did anyone do any testing of this or is still testing?
I hear you on the convenience, but I just don't like shady shit. Be upfront with the fees/costs. Mining Pool Hub has auto-exchange and can mine multiple coins. They are upfront on exchange fees.
I like the stats and PPS on zpool better since I only have limited mining time each day. If their info is correct, their profitability seems higher than other pools without much of a reason as to why they are higher that I can tell.
I don't want to mine there for a few days expecting X and getting Y because they are not upfront about exchange fees and I am suckered in with the higher profitability numbers that is why I wanted to see if anyone had given it a try.
Have you tried the auto exchange on mining pool hub? they say the tx fee is 0.2% but never really mentioned about the exchange fee. They exchange on 3 exchanges (bittrex, yobit, and poloniex). I know on bittrex if you trade it's 0.25% each way. If you mine ZEC and want to exchange for ZCL you will end up getting 0.5% exchange fee. I'm not sure if MPH has any deals with these exchanges such that they can shrink the fees to 0.2% no mater what coin you want to auto exchange for. Or is this 0.2% merely a fee for transferring to and from the exchange, plus whatever exchange fees on top of that.